3 #include "cl_collision.h"
7 typedef struct physentity_s
9 // this may be a entity_t, or a prvm_edict_t, or whatever
12 // can be NULL if it is a bbox object
15 // node this entity crosses
16 // for avoiding unnecessary collisions
19 // matrix for converting from model to world coordinates
20 double modeltoworldmatrix[3][4];
22 // matrix for converting from world to model coordinates
23 double worldtomodelmatrix[3][4];
25 // if this is a bmodel, this is used for culling it quickly
26 // if this is not a bmodel, this is used for actual collisions
27 double mins[3], maxs[3];
32 trace_t CL_TraceBox(const vec3_t start, const vec3_t mins, const vec3_t maxs, const vec3_t end, int hitbmodels, int *hitent, int hitsupercontentsmask, qboolean hitplayers)
36 vec3_t tracemins, tracemaxs;
37 trace_t cliptrace, trace;
39 vec3_t starttransformed, endtransformed, starttransformedmins, endtransformedmins, starttransformedmaxs, endtransformedmaxs;
40 vec3_t startmins, startmaxs, endmins, endmaxs, entmins, entmaxs;
41 vec_t *playermins, *playermaxs;
43 VectorAdd(start, mins, startmins);
44 VectorAdd(start, maxs, startmaxs);
45 VectorAdd(end, mins, endmins);
46 VectorAdd(end, maxs, endmaxs);
48 memset (&cliptrace, 0 , sizeof(trace_t));
49 cliptrace.fraction = 1;
50 cliptrace.realfraction = 1;
52 if (cl.worldmodel && cl.worldmodel->TraceBox)
53 cl.worldmodel->TraceBox(cl.worldmodel, 0, &cliptrace, startmins, startmaxs, endmins, endmaxs, hitsupercontentsmask);
58 if (hitbmodels && cl_num_brushmodel_entities)
60 tracemins[0] = min(start[0], end[0]) + mins[0];
61 tracemaxs[0] = max(start[0], end[0]) + maxs[0];
62 tracemins[1] = min(start[1], end[1]) + mins[1];
63 tracemaxs[1] = max(start[1], end[1]) + maxs[1];
64 tracemins[2] = min(start[2], end[2]) + mins[2];
65 tracemaxs[2] = max(start[2], end[2]) + maxs[2];
67 // look for embedded bmodels
68 for (n = 0;n < cl_num_brushmodel_entities;n++)
70 ent = &cl_entities[cl_brushmodel_entities[n]].render;
71 if (!BoxesOverlap(tracemins, tracemaxs, ent->mins, ent->maxs))
74 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
75 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
76 VectorAdd(starttransformed, mins, starttransformedmins);
77 VectorAdd(starttransformed, maxs, starttransformedmaxs);
78 VectorAdd(endtransformed, mins, endtransformedmins);
79 VectorAdd(endtransformed, maxs, endtransformedmaxs);
81 memset (&trace, 0 , sizeof(trace_t));
83 trace.realfraction = 1;
85 if (ent->model && ent->model->TraceBox)
86 ent->model->TraceBox(ent->model, 0, &trace, starttransformedmins, starttransformedmaxs, endtransformedmins, endtransformedmaxs, hitsupercontentsmask);
88 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
90 cliptrace.allsolid = true;
93 cliptrace.startsolid = true;
94 if (cliptrace.realfraction == 1)
96 *hitent = cl_brushmodel_entities[n];
98 // don't set this except on the world, because it can easily confuse
99 // monsters underwater if there's a bmodel involved in the trace
100 // (inopen && inwater is how they check water visibility)
102 // cliptrace.inopen = true;
104 cliptrace.inwater = true;
105 if (trace.realfraction < cliptrace.realfraction)
107 cliptrace.fraction = trace.fraction;
108 cliptrace.realfraction = trace.realfraction;
109 cliptrace.plane = trace.plane;
111 *hitent = cl_brushmodel_entities[n];
112 Matrix4x4_Transform3x3(&ent->matrix, trace.plane.normal, cliptrace.plane.normal);
114 cliptrace.startsupercontents |= trace.startsupercontents;
119 tracemins[0] = min(start[0], end[0]) + mins[0];
120 tracemaxs[0] = max(start[0], end[0]) + maxs[0];
121 tracemins[1] = min(start[1], end[1]) + mins[1];
122 tracemaxs[1] = max(start[1], end[1]) + maxs[1];
123 tracemins[2] = min(start[2], end[2]) + mins[2];
124 tracemaxs[2] = max(start[2], end[2]) + maxs[2];
126 for (n = 1;n < cl.maxclients+1;n++)
128 if (n != cl.playerentity)
130 ent = &cl_entities[n].render;
132 playermins = cl_playerstandmins;
133 playermaxs = cl_playerstandmaxs;
134 Matrix4x4_OriginFromMatrix(&ent->matrix, origin);
135 VectorAdd(origin, playermins, entmins);
136 VectorAdd(origin, playermaxs, entmaxs);
137 if (!BoxesOverlap(tracemins, tracemaxs, entmins, entmaxs))
140 memset (&trace, 0 , sizeof(trace_t));
142 trace.realfraction = 1;
144 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
145 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
146 Collision_ClipTrace_Box(&trace, playermins, playermaxs, starttransformed, mins, maxs, endtransformed, hitsupercontentsmask, SUPERCONTENTS_SOLID);
148 // LordHavoc: take the 'best' answers from the new trace and combine with existing data
150 cliptrace.allsolid = true;
151 if (trace.startsolid)
153 cliptrace.startsolid = true;
154 if (cliptrace.realfraction == 1)
158 // don't set this except on the world, because it can easily confuse
159 // monsters underwater if there's a bmodel involved in the trace
160 // (inopen && inwater is how they check water visibility)
162 // cliptrace.inopen = true;
164 cliptrace.inwater = true;
165 if (trace.realfraction < cliptrace.realfraction)
167 cliptrace.fraction = trace.fraction;
168 cliptrace.realfraction = trace.realfraction;
169 cliptrace.plane = trace.plane;
172 Matrix4x4_Transform3x3(&ent->matrix, trace.plane.normal, cliptrace.plane.normal);
174 cliptrace.startsupercontents |= trace.startsupercontents;
178 cliptrace.fraction = bound(0, cliptrace.fraction, 1);
179 cliptrace.realfraction = bound(0, cliptrace.realfraction, 1);
180 VectorLerp(start, cliptrace.fraction, end, cliptrace.endpos);
184 float CL_SelectTraceLine(const vec3_t start, const vec3_t end, vec3_t impact, vec3_t normal, int *hitent, entity_render_t *ignoreent, qboolean csqcents)
186 float maxfrac, maxrealfrac;
189 unsigned char *entactivelist;
190 entity_render_t *ent;
191 float tracemins[3], tracemaxs[3];
193 float tempnormal[3], starttransformed[3], endtransformed[3];
195 memset (&trace, 0 , sizeof(trace_t));
197 trace.realfraction = 1;
198 VectorCopy (end, trace.endpos);
202 if (cl.worldmodel && cl.worldmodel->TraceBox)
203 cl.worldmodel->TraceBox(cl.worldmodel, 0, &trace, start, start, end, end, SUPERCONTENTS_SOLID);
206 VectorCopy(trace.plane.normal, normal);
207 //cl_traceline_startsupercontents = trace.startsupercontents;
208 maxfrac = trace.fraction;
209 maxrealfrac = trace.realfraction;
211 tracemins[0] = min(start[0], end[0]);
212 tracemaxs[0] = max(start[0], end[0]);
213 tracemins[1] = min(start[1], end[1]);
214 tracemaxs[1] = max(start[1], end[1]);
215 tracemins[2] = min(start[2], end[2]);
216 tracemaxs[2] = max(start[2], end[2]);
220 entlist = cl_csqcentities;
221 entactivelist = cl_csqcentities_active;
222 entsnum = cl_num_csqcentities;
226 entlist = cl_entities;
227 entactivelist = cl_entities_active;
228 entsnum = cl_num_entities;
231 // look for embedded bmodels
232 for (n = 0;n < entsnum;n++)
234 if (!entactivelist[n])
236 ent = &entlist[n].render;
237 if (!BoxesOverlap(ent->mins, ent->maxs, tracemins, tracemaxs))
239 if (!ent->model || !ent->model->TraceBox)
241 if ((ent->flags & RENDER_EXTERIORMODEL) && !chase_active.integer)
243 // if transparent and not selectable, skip entity
244 if (!(entlist[n].state_current.effects & EF_SELECTABLE) && (ent->alpha < 1 || (ent->effects & (EF_ADDITIVE | EF_NODEPTHTEST))))
246 if (ent == ignoreent)
248 Matrix4x4_Transform(&ent->inversematrix, start, starttransformed);
249 Matrix4x4_Transform(&ent->inversematrix, end, endtransformed);
251 if (ent->model && ent->model->TraceBox)
252 ent->model->TraceBox(ent->model, ent->frameblend[0].frame, &trace, starttransformed, starttransformed, endtransformed, endtransformed, SUPERCONTENTS_SOLID);
254 //cl_traceline_startsupercontents |= trace.startsupercontents;
255 if (maxrealfrac > trace.realfraction)
259 maxfrac = trace.fraction;
260 maxrealfrac = trace.realfraction;
263 VectorCopy(trace.plane.normal, tempnormal);
264 Matrix4x4_Transform3x3(&ent->matrix, tempnormal, normal);
268 maxfrac = bound(0, maxfrac, 1);
269 maxrealfrac = bound(0, maxrealfrac, 1);
270 //if (maxfrac < 0 || maxfrac > 1) Con_Printf("fraction out of bounds %f %s:%d\n", maxfrac, __FILE__, __LINE__);
272 VectorLerp(start, maxfrac, end, impact);
276 void CL_FindNonSolidLocation(const vec3_t in, vec3_t out, vec_t radius)
278 // FIXME: check multiple brush models
279 if (cl.worldmodel && cl.worldmodel->brush.FindNonSolidLocation)
280 cl.worldmodel->brush.FindNonSolidLocation(cl.worldmodel, in, out, radius);
283 int CL_PointQ1Contents(const vec3_t p)
285 return Mod_Q1BSP_NativeContentsFromSuperContents(NULL, CL_TraceBox(p, vec3_origin, vec3_origin, p, true, NULL, 0, false).startsupercontents);
287 // FIXME: check multiple brush models
288 if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
289 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);
294 int CL_PointSuperContents(const vec3_t p)
296 return CL_TraceBox(p, vec3_origin, vec3_origin, p, true, NULL, 0, false).startsupercontents;
298 // FIXME: check multiple brush models
299 if (cl.worldmodel && cl.worldmodel->brush.PointContentsQ1)
300 return cl.worldmodel->brush.PointContentsQ1(cl.worldmodel, p);